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Composition comprising a multistage polymer and a (METH)acrylic polymer, its method of preparation and its use

Active Publication Date: 2020-06-04
ARKEMA FRANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0034]characterized in that at least the component a) and the component b) of composition (PC1) are part of a multistage polymer (MP1), and characterized in that the polymer (C1) has a mass average molecular weight Mw of at least 10

Problems solved by technology

None of the prior art documents discloses a multistage polymer combined with a (

Method used

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  • Composition comprising a multistage polymer and a (METH)acrylic polymer, its method of preparation and its use
  • Composition comprising a multistage polymer and a (METH)acrylic polymer, its method of preparation and its use

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first embodiment

[0100]In a first embodiment the polymer (A1) having a glass transition temperature below 10° C. comprises at least 50 wt % of polymeric units coming from alkyl acrylate or alkyl acrylates and the stage (A) is the most inner layer of the polymer particle having the multilayer structure. In other words the stage (A) comprising the polymer (A1) is the core of the polymer particle.

[0101]With regard to the polymer (A1) of the first preferred embodiment, it is a (meth) acrylic polymer comprising at least 50 wt % of polymeric units coming from acrylic monomers. Preferably 60 wt % and more preferably 70 wt % of the polymer (A1) are acrylic monomers.

[0102]The acrylic momonomer in polymer (A1) comprises monomers chosen from C1 to C18 alkyl acrylates or mixtures thereof. More preferably acrylic monomer in polymer (A1) comprises monomers of C2 to C12 alkyl acrylic monomers or mixtures thereof. Still more preferably acrylic monomer in polymer (A1) comprises monomers of C2 to C8 alkyl acrylic mon...

second embodiment

[0109]By way of example, the polymer (A1) of the core of the second embodiment, mention may be made of isoprene homopolymers or butadiene homopolymers, isoprene-butadiene copolymers, copolymers of isoprene with at most 98 wt % of a vinyl monomer and copolymers of butadiene with at most 98 wt % of a vinyl monomer. The vinyl monomer may be styrene, an alkylstyrene, acrylonitrile, an alkyl (meth)acrylate, or butadiene or isoprene. In a preferred embodiment the core is a butadiene homopolymer.

[0110]More preferably the glass transition temperature Tg of the polymer (A1) comprising at least 50 wt % of polymeric units coming from isoprene or butadiene is between −100° C. and 10° C., even more preferably between −90° C. and 0° C., advantageously between −80° C. and 0° C. and most advantageously between −70° C. and −20° C.

[0111]In a third preferred embodiment the polymer (A1) is a silicone rubber based polymer. The silicone rubber for example is polydimethyl siloxane. More preferably the gla...

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Abstract

The present invention relates to a composition comprising a multistage polymer and a (meth)acrylic polymer, its process of preparation, and its use. In particular, the present invention relates to a composition comprising a multistage polymer in form of polymeric particles made by a multistage process and a (meth)acrylic polymer, while the (meth)acrylic polymer possesses a medium molecular weight. The present invention also relates to polymer composition comprising polymeric particles made by a multistage process comprising at least two stages and a (meth)acrylic polymer with a medium molecular weight, its method of preparation, its use as impact modifier in polymer compositions for composites comprising thermosetting resins or thermoplastic polymers and compositions and articles comprising it.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a composition comprising a multistage polymer and a (meth)acrylic polymer its process of preparation and its use.[0002]In particular the present invention relates to a composition comprising a multistage polymer in form of polymeric particles made by a multistage process and a (meth)acrylic polymer, while the (meth)acrylic polymer possesses a medium molecular weight.[0003]More particularly the present invention relates to polymer composition comprising polymeric particles made by a multistage process comprising at least two stages and a (meth)acrylic polymer with a medium molecular weight, its method of preparation, its use as impact modifier in polymer compositions for composites comprising thermosetting resins or thermoplastic polymers and compositions and articles comprising it.TECHNICAL PROBLEM[0004]Mechanical or structured parts or articles or structural adhesives that have to absorb high stresses during their use are...

Claims

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Application Information

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IPC IPC(8): C08F265/06C08F279/02C08L51/00C08F2/22
CPCC08F2/22C08L2312/00C08F265/06C08L51/003C08F279/02C08L2205/02C08F283/12C08L33/08C08L51/00C08L51/04C08L51/085C09J151/00C08F2810/20
Inventor HAJJI, PHILIPPEPIRRI, ROSANGELAINOUBLI, RABICOUFFIN, ALINE O.
Owner ARKEMA FRANCE SA